# .NET 11 Preview 7

Published articles for .NET 11 Preview 7.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## Announcing On-Demand State Repartitioning for Apache Spark™ Structured Streaming on Databricks

DevFeed: [Announcing On-Demand State Repartitioning for Apache Spark™ Structured Streaming on Databricks](<https://devfeed.tech/articles/announcing-on-demand-state-repartitioning-for-apache-sparktm-structured-streaming-on-databricks-26235.md>)

Original publisher: [Read original article](<https://www.databricks.com/blog/announcing-demand-state-repartitioning-apache-sparktm-structured-streaming-databricks>)

Author: Thangam Vaiyapuri; Jay Palaniappan; B. Micheal Okutubo; Zifei Feng

Published: 2026-09-14T21:04:30Z

Content type: release

Language: en

Sources: [Databricks](<https://devfeed.tech/sources/databricks.md>)

Topics: [Streaming](<https://devfeed.tech/topics/streaming.md>), [databricks](<https://devfeed.tech/topics/databricks.md>), [real-time](<https://devfeed.tech/topics/real-time.md>), [Amazon S3](<https://devfeed.tech/topics/amazon-s3.md>), [API](<https://devfeed.tech/topics/api.md>)

Tags: [amazon-s3](<https://devfeed.tech/tags/amazon-s3.md>), [api](<https://devfeed.tech/tags/api.md>), [data-engineering](<https://devfeed.tech/tags/data-engineering.md>), [databricks](<https://devfeed.tech/tags/databricks.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [fraud-detection](<https://devfeed.tech/tags/fraud-detection.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [production](<https://devfeed.tech/tags/production.md>), [real-time](<https://devfeed.tech/tags/real-time.md>), [streaming](<https://devfeed.tech/tags/streaming.md>)

### AI overview

Databricks announces on-demand state repartitioning for Apache Spark Structured Streaming in Public Preview, available in Databricks Runtime 18 and later. The capability lets production stateful streaming queries resize their partition count while preserving checkpoint state, supporting workloads such as aggregations, stream-stream joins, deduplication, sessionization, and transformWithState. Coveo reports reducing related Amazon S3 API costs by 40%.

### Source excerpt

Anyone running stateful Apache Spark™ Structured Streaming queries in production...

## The pain of serializing unions and closed class hierarchies with System.Text.Json: Exploring the .NET 11 preview - Part 7

DevFeed: [The pain of serializing unions and closed class hierarchies with System.Text.Json: Exploring the .NET 11 preview - Part 7](<https://devfeed.tech/articles/the-pain-of-serializing-unions-and-closed-class-hierarchies-with-system-text-json-exploring-the-net-11-preview-part-7-51479.md>)

Original publisher: [Read original article](<https://andrewlock.net/exploring-the-dotnet-11-preview-7-the-pain-of-serializing-unions-and-closed-class-hierarchies-with-system-text-json/>)

Author: Andrew Lock

Published: 2026-09-01T10:00:00Z

Content type: tutorial

Language: en

Sources: [Andrew Lock | .NET Escapades](<https://devfeed.tech/sources/andrew-lock-net-escapades.md>)

Topics: [.NET](<https://devfeed.tech/topics/net.md>), [system.text.json](<https://devfeed.tech/topics/system-text-json.md>), [C#](<https://devfeed.tech/topics/csharp.md>), [Closed hierarchies](<https://devfeed.tech/topics/closed-hierarchies.md>), [JSON](<https://devfeed.tech/topics/json.md>), [union types](<https://devfeed.tech/topics/union-types.md>), [Programming](<https://devfeed.tech/topics/programming.md>)

Tags: [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [c-sharp-15](<https://devfeed.tech/tags/c-sharp-15.md>), [closed-hierarchies](<https://devfeed.tech/tags/closed-hierarchies.md>), [json](<https://devfeed.tech/tags/json.md>), [net](<https://devfeed.tech/tags/net.md>), [net-11](<https://devfeed.tech/tags/net-11.md>), [net-11-c-sharp](<https://devfeed.tech/tags/net-11-c-sharp.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [preview](<https://devfeed.tech/tags/preview.md>), [rust](<https://devfeed.tech/tags/rust.md>), [system-text-json](<https://devfeed.tech/tags/system-text-json.md>)

### AI overview

This tutorial examines how System.Text.Json handles union types and closed class hierarchies introduced in .NET 11 and C# 15. It compares the two approaches, demonstrates serialization and deserialization, and documents errors and compatibility edge cases encountered in .NET 11 Preview 7.

### Source excerpt

In this post I discuss the System.Text.Json support for unions and closed hierarchies coming in .NET 11, the decisions made, and some of the sharp edges I hit

## Explore new features available in C# 15 preview

DevFeed: [Explore new features available in C# 15 preview](<https://devfeed.tech/articles/explore-new-features-available-in-c-15-preview-2949.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/dotnet/explore-csharp-15/>)

Author: Bill Wagner

Published: 2026-08-24T17:00:00Z

Content type: article

Language: en

Sources: [.NET Blog](<https://devfeed.tech/sources/net-blog.md>)

Topics: [C#](<https://devfeed.tech/topics/csharp.md>), [.NET](<https://devfeed.tech/topics/net.md>), [union types](<https://devfeed.tech/topics/union-types.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [c-sharp-15](<https://devfeed.tech/tags/c-sharp-15.md>), [closed-hierarchies](<https://devfeed.tech/tags/closed-hierarchies.md>), [dotnet](<https://devfeed.tech/tags/dotnet.md>), [features](<https://devfeed.tech/tags/features.md>), [net](<https://devfeed.tech/tags/net.md>), [net-11](<https://devfeed.tech/tags/net-11.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [union-types](<https://devfeed.tech/tags/union-types.md>)

### AI overview

An overview of the new features in C# 15, which ships with .NET 11. The article covers union types, closed hierarchies, the preview memory-safety redesign, and several smaller language changes.

### Source excerpt

C# 15 ships with .NET 11. It adds union types, closed hierarchies, a preview of the updated unsafe model, and a few smaller changes that remove everyday ceremony. The post Explore new features available in C# 15 preview appeared first on .NET Blog.

## Monitor watchOS and visionOS apps with Datadog RUM

DevFeed: [Monitor watchOS and visionOS apps with Datadog RUM](<https://devfeed.tech/articles/monitor-watchos-and-visionos-apps-with-datadog-rum-2299.md>)

Original publisher: [Read original article](<https://www.datadoghq.com/blog/monitor-watchos-visionos-datadog-rum/>)

Author: Jessica Manheimer; Maël Lilensten

Published: 2026-07-06T00:00:00Z

Content type: article

Language: en

Sources: [Datadog](<https://devfeed.tech/sources/datadog-the-monitor-blog.md>)

Topics: [real user monitoring](<https://devfeed.tech/topics/real-user-monitoring.md>), [visionOS](<https://devfeed.tech/topics/visionos.md>), [watchOS](<https://devfeed.tech/topics/watchos.md>), [error tracking](<https://devfeed.tech/topics/error-tracking.md>), [tracing](<https://devfeed.tech/topics/tracing.md>), [SDK](<https://devfeed.tech/topics/sdk.md>), [observability](<https://devfeed.tech/topics/observability.md>), [User Experience](<https://devfeed.tech/topics/user-experience.md>), [SwiftUI](<https://devfeed.tech/topics/swiftui.md>), [iOS](<https://devfeed.tech/topics/ios.md>)

Tags: [apple](<https://devfeed.tech/tags/apple.md>), [apple-watch](<https://devfeed.tech/tags/apple-watch.md>), [digital-experience-monitoring](<https://devfeed.tech/tags/digital-experience-monitoring.md>), [error-tracking](<https://devfeed.tech/tags/error-tracking.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [observability](<https://devfeed.tech/tags/observability.md>), [real-user-monitoring](<https://devfeed.tech/tags/real-user-monitoring.md>), [traces](<https://devfeed.tech/tags/traces.md>), [user-experience](<https://devfeed.tech/tags/user-experience.md>), [vision](<https://devfeed.tech/tags/vision.md>)

### AI overview

Datadog RUM extends crash reporting, error tracking, deobfuscated stack traces, and session-level observability to watchOS and visionOS apps. The article explains how teams can investigate failures and understand user interactions without a separate SDK.

### Source excerpt

Monitor crashes, errors, and user sessions on watchOS and visionOS by using Datadog RUM with fully deobfuscated stack traces and no separate SDK required.

## wasmCloud 2.4.0: HPA + KEDA autoscaling, multi-handler workloads, pluggable NATS

DevFeed: [wasmCloud 2.4.0: HPA + KEDA autoscaling, multi-handler workloads, pluggable NATS](<https://devfeed.tech/articles/wasmcloud-2-4-0-hpa-keda-autoscaling-multi-handler-workloads-pluggable-nats-15440.md>)

Original publisher: [Read original article](<https://wasmcloud.com/blog/wasmcloud-2-4-0-release/>)

Author: Eric Gregory

Published: 2026-06-17T00:00:00Z

Content type: release

Language: en

Sources: [wasmCloud](<https://devfeed.tech/sources/wasmcloud-blog.md>)

Topics: [WebAssembly](<https://devfeed.tech/topics/web-assembly.md>), [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [autoscaling](<https://devfeed.tech/topics/autoscaling.md>), [Messaging](<https://devfeed.tech/topics/messaging.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [autoscaling](<https://devfeed.tech/tags/autoscaling.md>), [handler](<https://devfeed.tech/tags/handler.md>), [helm](<https://devfeed.tech/tags/helm.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [messaging](<https://devfeed.tech/tags/messaging.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [opentelemetry](<https://devfeed.tech/tags/opentelemetry.md>), [prometheus](<https://devfeed.tech/tags/prometheus.md>), [security](<https://devfeed.tech/tags/security.md>), [wasmcloud](<https://devfeed.tech/tags/wasmcloud.md>)

### AI overview

wasmCloud 2.4.0 adds Kubernetes-native autoscaling for Wasm workloads through HPA and KEDA, multi-handler messaging workflows, expanded Helm configuration, a redesigned host plugin API, and a Wasmtime 45.0.2 security update.

### Source excerpt

wasmCloud 2.4.0 brings Kubernetes-native autoscaling for Wasm workloads via HPA and KEDA, multi-handler messaging in wash dev, a Helm chart NATS overhaul with split scheduler/data URLs, a NATS-backed operator liveness probe, and a Wasmtime 45.0.2 security bump.

## End of Support for Router v1.x; Long-Term Support (LTS) Policy Update

DevFeed: [End of Support for Router v1.x; Long-Term Support (LTS) Policy Update](<https://devfeed.tech/articles/end-of-support-for-router-v1-x-long-term-support-lts-policy-update-23285.md>)

Original publisher: [Read original article](<https://www.apollographql.com/blog/end-of-support-for-router-v1-x-long-term-support-lts-policy-update>)

Author: Shane Myrick

Published: 2025-12-19T15:42:00Z

Content type: release

Language: en

Sources: [Apollo Blog](<https://devfeed.tech/sources/apollo-blog.md>)

Topics: [upgrade](<https://devfeed.tech/topics/upgrade.md>), [maintenance](<https://devfeed.tech/topics/maintenance.md>), [releases](<https://devfeed.tech/topics/releases.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [announcement](<https://devfeed.tech/tags/announcement.md>), [lts](<https://devfeed.tech/tags/lts.md>), [maintenance](<https://devfeed.tech/tags/maintenance.md>), [net](<https://devfeed.tech/tags/net.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [security](<https://devfeed.tech/tags/security.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

### AI overview

Apollo announces that Router v1.x, including v1.61.x LTS, and Federation v2.9 will reach end of support on March 31, 2026. The article also introduces Router v2.10 with Federation v2.12 as the next LTS baseline and describes revised support schedules beginning in 2026.

### Source excerpt

To better support upgrade planning and provide greater clarity around version lifecycles, we are refining our Router LTS policy and introducing updates to the current maintenance schedule for both Router and Federation.